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5.16 F
S
IXING
TRAPS
F
. 5.16
F
S
IG
A
IXING
20
Two types of Fixing Strap are supplied, long and short - for dimensions
see fig. 3.5A.
The construction of the roof, batten spacing and type of tile will determine
which of the fixing straps is most suitable for the installation.
Where appropriate, an optional rafter bar is available (code:
rafter bar allows the fixing strap to penetrate the roof and be attached to a
bar affixed between the rafters (see separate data sheet).
Long Fixing Straps
These are generally suitable for roofs with tiles up to a maximum length of
500mm e.g. large slate tiles.
Short Fixing Straps
These are generally suitable for roofs with small clay tiles.
The fixing straps are made of stainless steel and are pliable enough to be
bent to shape around the fixed tiles, so that their top end lays flat on the
felt/membrane directly over rafters.
Rafters should be in sound condition. Rafters that have deteriorated due
to age and decay should be made sound, reinforced or replaced.
It is important that each strap is secured to a sound rafter with at least
three screws which have at least 45mm length in the rafter, washers are
supplied for the screws.
Always pre-drill the rafter before screwing to prevent splitting.
TRAP
For best appearance the collectors should be fitted so that they are square
with the tiles.
To achieve this ensure that the bottom pair of fixing straps are positioned
using the edge of the tiles as a datum - dimension 'A' in fig. 5.16A.
The collectors must be correctly secured to the roof. The roof must
be of adequate structure to support the collectors.
A
Bend Fixing Strap
around tiles
WARNING
Wood Screws
3 qty Ø6 x 50
+ washer
Fixing Strap
). The
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